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libgcj41
nov415378.diff
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File nov415378.diff of Package libgcj41
Index: gcc/testsuite/gcc.c-torture/compile/20080805-1.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gcc/testsuite/gcc.c-torture/compile/20080805-1.c 2009-11-20 13:42:35.000000000 +0100 @@ -0,0 +1,33 @@ +int gl2; +typedef __SIZE_TYPE__ size_t; + +extern void *memcpy (void *dest, const void *src, size_t n); + +void +f1 () +{ + int i2; + unsigned char bf[64 * 1024 + 4]; + + for (i2 = 0; i2 < 3; i2++) + { + unsigned char *p2 = bf; + unsigned char *p3 = ((void *) 0); + unsigned short ctf2; + + p2 += sizeof (short); + + for (ctf2 = 0; ctf2 < 3; ctf2++) + { + if (ctf2 == 1) + { + unsigned short of = p2 - bf - 6; + unsigned short *ofp = (unsigned short *) &of; + memcpy (p3, ofp, sizeof (short)); + } + + if (gl2 == 1) + p2 += 3; + } + } +} Index: gcc/reload.c =================================================================== --- gcc/reload.c.orig 2009-11-20 13:42:32.000000000 +0100 +++ gcc/reload.c 2009-11-20 13:42:35.000000000 +0100 @@ -3828,47 +3828,62 @@ find_reloads (rtx insn, int replace, int ? RELOAD_FOR_INSN : RELOAD_OTHER); } - /* Any constants that aren't allowed and can't be reloaded - into registers are here changed into memory references. */ - for (i = 0; i < noperands; i++) - if (! goal_alternative_win[i] - && CONST_POOL_OK_P (recog_data.operand[i]) - && ((PREFERRED_RELOAD_CLASS (recog_data.operand[i], - (enum reg_class) goal_alternative[i]) - == NO_REGS) - || no_input_reloads) - && operand_mode[i] != VOIDmode) - { - substed_operand[i] = recog_data.operand[i] - = find_reloads_toplev (force_const_mem (operand_mode[i], - recog_data.operand[i]), - i, address_type[i], ind_levels, 0, insn, - NULL); - if (alternative_allows_memconst (recog_data.constraints[i], - goal_alternative_number)) - goal_alternative_win[i] = 1; - } + /* Any constants that aren't allowed and can't be reloaded + into registers are here changed into memory references. */ + for (i = 0; i < noperands; i++) + if (! goal_alternative_win[i]) + { + rtx op = recog_data.operand[i]; + rtx subreg = NULL_RTX; + rtx plus = NULL_RTX; + enum machine_mode mode = operand_mode[i]; + + /* Reloads of SUBREGs of CONSTANT RTXs are handled later in + push_reload so we have to let them pass here. */ + if (GET_CODE (op) == SUBREG) + { + subreg = op; + op = SUBREG_REG (op); + mode = GET_MODE (op); + } + + if (GET_CODE (op) == PLUS) + { + plus = op; + op = XEXP (op, 1); + } + + if (CONST_POOL_OK_P (op) + && ((PREFERRED_RELOAD_CLASS (op, + (enum reg_class) goal_alternative[i]) + == NO_REGS) + || no_input_reloads) + && mode != VOIDmode) + { + int this_address_reloaded; + rtx tem = force_const_mem (mode, op); - /* Likewise any invalid constants appearing as operand of a PLUS - that is to be reloaded. */ - for (i = 0; i < noperands; i++) - if (! goal_alternative_win[i] - && GET_CODE (recog_data.operand[i]) == PLUS - && CONST_POOL_OK_P (XEXP (recog_data.operand[i], 1)) - && (PREFERRED_RELOAD_CLASS (XEXP (recog_data.operand[i], 1), - (enum reg_class) goal_alternative[i]) - == NO_REGS) - && operand_mode[i] != VOIDmode) - { - rtx tem = force_const_mem (operand_mode[i], - XEXP (recog_data.operand[i], 1)); - tem = gen_rtx_PLUS (operand_mode[i], - XEXP (recog_data.operand[i], 0), tem); - - substed_operand[i] = recog_data.operand[i] - = find_reloads_toplev (tem, i, address_type[i], - ind_levels, 0, insn, NULL); - } + /* If we stripped a SUBREG or a PLUS above add it back. */ + if (plus != NULL_RTX) + tem = gen_rtx_PLUS (mode, XEXP (plus, 0), tem); + + if (subreg != NULL_RTX) + tem = gen_rtx_SUBREG (operand_mode[i], tem, SUBREG_BYTE (subreg)); + + this_address_reloaded = 0; + substed_operand[i] = recog_data.operand[i] + = find_reloads_toplev (tem, i, address_type[i], ind_levels, + 0, insn, &this_address_reloaded); + + /* If the alternative accepts constant pool refs directly + there will be no reload needed at all. */ + if (plus == NULL_RTX + && subreg == NULL_RTX + && alternative_allows_memconst (recog_data.constraints[i], + goal_alternative_number)) + goal_alternative_win[i] = 1; + } + } /* Record the values of the earlyclobber operands for the caller. */ if (goal_earlyclobber)
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